Spool



E. .5. LiPPs.

SPOOL.

I APPLICATION FILED APR. 8, 1919.

1,359 Q 1. Patented NOV. 16, 1920.

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A ITORME! EMORY J. LIPPS, 0F FOUNTAIN HILL BOROUGH, PENNSYLVANIA.

SPOOL.

Specification of Letters Patent.

Patented Nov. 16, 1920.

Application filed April 8, 1919. Serial No. 288,485.

I '0 all whom it may concern:

Be it known that I, EMORY J. Lrrrs, a citizen of the United States, residing at the borough of Fountain Hill, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Spools, of which the following is a specification.

In winding onto spools, bobbins, or so called shafts (hereinafter termed spools) having flanges the windings frequently pile up at one end and form a groove with the adjoining flange at the other, due to the guide on the traverse rail not traversing to limits which are in registry with the inner faces of the spool flanges; sometimes a groove will be formed with the flange at each end of the package, due to the guide traversing to limits which are short of both flanges. Consequently, as-is well known, the material does not deliver properly from the package when it goes into use, par ticularly where the delivery is effected from one end, that is, in the direction of the length of the axis of the package. The most serious difficulty is that frequently one of the convolutions in the groove formed as stated will become bound or buried therein, and offering suddenly increased resistance to the shaft medium will break, so that time is lost in piecing the ends together; on the other hand, where the windings form the groove with one flange and have been unduly piled up adjacent the other flange of the spool they will at the latter point due to handling or while the package is delivering slip free, toward the opposite flange, which undesirably alters the tension and may lead to snarling and breakage.

The object of this invention is to avoid these incidents of the depositing of the windings on the spool when the traversing guide is not accurately centered with relation to the spool, and this object I have accomplished by providing a spool of the kind stated with buttresses disposed at intervals around the spool and at the inner face of its flange, and each being radial or substantially so. So far as the grooved end of thepacka-ge is concerned, the effect of these buttresses is to make the end windings, which would otherwise be circular in plan, assume a polygonal shape, with the angles of the polygon usually projecting more or less, so that no convolution for any material extent thereof can become bound in the groove, which is not now continuous or at least of regular depth, but exists in segments or sections. So far as the piled up end of the package is concerned, here, too, the end windings assume a polygonal shape in plan, and this I find has a very marked tendency to prevent the superficial windings or coils slipping endwise out of place. I find four or five of these buttresses to each flan 'e will usually do, though of course the number may vary according to the diameter of the spool and other conditions. Probably the most simple and inexpensive way to. form them is of wire, as herein shown, but that is not material in the broad aspect of the invention.

In the drawing,-

Figure 1 is a side elevation of one form of the improved spool, partly in section;

Fig. 2 shows the same spool also in side elevation, with the yarn wound thereon;

Figs. 3 and 4 are horizontal sectional views 011 the lines 3-3 and 4;4L of Figs. 1 and 2, respectively; and

Fig. 5 is a side elevation of another form of the improved spool, partly in section.

In Figs. 1 to 4 the buttresses are formed by wires (6 which are driven into the barrel 6 of the spool close to each flange 0 thereof, and have their free ends bent around the peripheries of and thereby clenched to the flanges or heads 0, whose inner faces are in planes at right angles to the axis of the spool. There are in the present instance four buttresses to each flange, 90 apart. It is preferred that each buttress present an incline d which shall form an obtuse angle with respect to the axis of the spool, and this may be done by forming the wire a with a slight outward bevel as shown in Fig. 1.

In Fig. 5 the buttresses are formed by wires 6 which are driven into the barrel f of the spool at points 90 apart and spaced from the adjoining faces of the heads or flanges 9, their outer portions being deflected toward the flanges to present inclines h which form obtuse angles with the axis of the spool and having their free ends bent off and set into suitable holes in the flanges.

The buttresses adjoining one head of the flange need not be in registry with those adjoining the other; compare Figs. 1 to 4:, where each two buttresses are in the same radial plane. with Fig. 5, where the buttresses are staggered.

When the spool is wound the yarn which forms the end convolutions of the package encounters the buttresses in being deposited on the spool, which tends to make the yarn pile up radially at the buttresses and form humps, as indicated at w in Fig. 2; see also Fig. 4. In consequence the end convolutions will assume a more or less polygonal shape viewed endwise of the package, the main or intermediate part y of the package of course retaining its true cylindrical shape. The shape thus given the end portions of the wound body of material is entirely without disadvantage even though the spool be accurately wound. If the spool be wound so as to produce the aforesaid groove at one .end and undue piling up at the other, then the faults usually incident thereto are avoided as follows: The end convolutions being now caused by the buttresses to form the humps a", that is, to assume a more or less polygonal shape, each such convolution no longer occupies the groove for its entire circumference, but only at intervals, i. 6., between the humps, in consequence of which it remains free for delivery and delivers without undue resistance even though the delivery be performed lengthwise of the axis of the package. At the other end of the package, where the end convolutions are unduly piled up, the formation of the humps serves to a very marked degree to discourage the superficial windings slipping free toward the other end of the package, because the buttresses not only give the windings polygonal shape but induce them during the winding to work into criss-cross relation to one another, producing stability in much the same way as in cross-wound packages.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is p 1. A spool having a peripheral flange to form a lateral abutment for the windings wound on the spool and also having substantially radial buttresses projecting inward beyond the inner face of the flange and disposed at intervals around the spool.

2. A spool having a peripheral flange to form a lateral abutment for the windings wound on the spool and also having substantially radial buttresses projecting inward beyond the inner face. of the flange and disposed at intervals around the spool, each buttress presenting an incline arranged at an obtuse angle to the a is of the spool.

3. In combination, with a spool having a peripheral flange to form a lateral abutment for the windings wound on the spool, substantially radial buttress devices secured to the spool and projecting inward beyond the inner face of the flange and arranged at intervals around the same.

4. In combination, with a spool having a peripheral flange to form a lateral abutment for the windings wound on the spool, substantially radial buttress devices secured to the spool at the inner face of the flange and arranged at intervals around the same, each device having its inner end embedded in the spool and its outer end secured to the flange.

In testimony whereof I affix my signature.

EMORY J. LIPPS. 

